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Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
would have killed
Grammar usage guide and real-world examplesUSAGE SUMMARY
"would have killed" is correct and usable in written English.
You can use it to refer to something that could have happened in the past, but did not. For example: If she had not been wearing a helmet, the impact of the crash would have killed her.
✓ Grammatically correct
News & Media
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified examples from authoritative sources
Exact Expressions
60 human-written examples
It would have killed him.
News & Media
"They would have killed us!
News & Media
"They would have killed it".
News & Media
"It would have killed him immediately".
News & Media
"She would have killed him," he said.
News & Media
I would have killed myself.
News & Media
They would have killed him.
News & Media
I would have killed him".
News & Media
"He would have killed me".
News & Media
Which would have killed you".
News & Media
Hurricane Maria would have killed my mother.
News & Media
Expert writing Tips
Best practice
Use "would have killed" to express a hypothetical situation in the past where death was a potential outcome but did not occur. For example, "If the doctor hadn't intervened, the illness "would have killed" him."
Common error
Avoid using "would have killed" when referring to something that definitively caused a death. Instead, use a simple past tense such as "killed". For instance, instead of "The poison "would have killed" him," say "The poison killed him."
Source & Trust
86%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "would have killed" functions as a modal perfect conditional, expressing a hypothetical outcome in the past. It indicates that a particular action or event could have resulted in death, but did not. As Ludwig AI confirms, it's grammatically correct and commonly used.
Frequent in
News & Media
85%
Science
5%
Formal & Business
3%
Less common in
Wiki
2%
Academia
2%
Social Media
1%
Ludwig's WRAP-UP
The phrase "would have killed" is a common and grammatically correct way to express a hypothetical situation where death was a potential outcome. Ludwig AI confirms its usability and correctness. Primarily found in News & Media, it serves to emphasize the near-fatal consequences of a specific scenario. While "would have killed" is generally appropriate for neutral contexts, more formal situations may benefit from alternative phrasing like "would have resulted in death". Be mindful to avoid tense errors by reserving this phrase for hypothetical past events, not actual occurrences. The phrase's high frequency across authoritative sources underscores its acceptance in standard English usage.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
could have killed
Expresses possibility rather than certainty of a fatal outcome.
might have killed
Similar to 'could have', indicating a possibility with slightly less emphasis on certainty.
would have resulted in death
A more formal and descriptive way of expressing a fatal outcome.
would have been fatal
Focuses on the quality of being deadly or causing death.
would have caused death
Directly states the action would have led to death.
would have ended their life
Emphasizes the ending of someone's life as a result.
would have taken their life
Focuses on the act of taking a life.
would have led to a fatality
Highlights the resulting incident as a fatality.
would have been the death of
An idiomatic way of saying something would have caused death.
would have extinguished
A more metaphorical way of expressing the end of life.
FAQs
How can I use "would have killed" in a sentence?
Use "would have killed" to describe a past hypothetical scenario where something almost caused death but didn't. Example: "The fall "would have killed" him if he hadn't landed on the soft ground."
What phrases are similar to "would have killed"?
Similar phrases include "could have killed", "might have killed", or "would have resulted in death", depending on the nuance you want to convey.
Is it correct to say "would of killed" instead of "would have killed"?
No, "would of killed" is grammatically incorrect. The correct form is "would have killed". The contraction "would've" can be used in informal contexts.
What's the difference between "would have killed" and "killed"?
"Killed" indicates a completed action resulting in death, while "would have killed" describes a hypothetical situation where death was a potential outcome but did not occur. For example, "The accident killed three people" versus "The accident "would have killed" him if he hadn't been wearing a seatbelt."
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Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
86%
Authority and reliability
4.5/5
Expert rating
Real-world application tested